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<?php $tz = new DateTimeZone('EST5EDT'); echo $tz->getName();
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.9, 5.5.17 - 5.5.38, 5.6.1 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
EST5EDT
Output for 5.5.10 - 5.5.16, 5.6.0
Fatal error: Uncaught exception 'Exception' with message 'DateTimeZone::__construct(): Unknown or bad timezone (EST5EDT)' in /in/t6ps6:2 Stack trace: #0 /in/t6ps6(2): DateTimeZone->__construct('EST5EDT') #1 {main} thrown in /in/t6ps6 on line 2
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
Fatal error: Class 'DateTimeZone' not found in /in/t6ps6 on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
Fatal error: Cannot instantiate non-existent class: datetimezone in /in/t6ps6 on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: datetimezone in /in/t6ps6 on line 2

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